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Compact lithium-glass neutron beam monitor for SANS at CSNS

文献类型：期刊论文

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作者Zhou K(周科); Zhou JR(周健荣); Zhou XJ(周晓娟); Xie ZY(谢肇阳); Yang GA(杨桂安); Wang YF(王艳凤); Chen YB(陈元柏); Sun ZJ(孙志嘉); Zhou, K; Zhou, JR
刊名NUCLEAR SCIENCE AND TECHNIQUES ; NUCLEAR SCIENCE AND TECHNIQUES
出版日期2018 ; 2018
卷号29期号:9页码:127
关键词Neutron beam monitor Neutron beam monitor Lithium glass n-gamma discrimination Detection efficiency Lithium glass n-gamma discrimination Detection efficiency
ISSN号1001-8042 ; 1001-8042
DOI10.1007/s41365-018-0468-z ; 10.1007/s41365-018-0468-z
文献子类Article ; Article
英文摘要A small-angle scattering neutron spectrometer for material research is under construction at the China Spallation Neutron Source. An intervening neutron beam monitor behind the sample is needed to measure the beam intensity in order to reduce the measurement uncertainty caused by beam fluctuation. Considering the mobility requirement and limited space, we proposed a compact monitor using a type of lithium-glass scintillator provided by China Building Materials Academy. Its performance was studied experimentally using Cf-252 and Co-60 sources. The neutron light yield of the selected scintillator was measured to be 5.3 x 10(3) photons/neutron. The feasibility of n-gamma discrimination using the charge comparison method was verified. By using the Geant4 toolkit, the monitor was modeled with precise physical processes including neutron tracking, scintillation, and optical photon transmission. The gamma sensitivity and detection efficiency were investigated in the simulation. It was concluded that a 0.5-mm-thick lithium-glass scintillator with natural lithium is an appropriate choice to satisfy both the neutron detection efficiency and gamma elimination requirements.; A small-angle scattering neutron spectrometer for material research is under construction at the China Spallation Neutron Source. An intervening neutron beam monitor behind the sample is needed to measure the beam intensity in order to reduce the measurement uncertainty caused by beam fluctuation. Considering the mobility requirement and limited space, we proposed a compact monitor using a type of lithium-glass scintillator provided by China Building Materials Academy. Its performance was studied experimentally using Cf-252 and Co-60 sources. The neutron light yield of the selected scintillator was measured to be 5.3 x 10(3) photons/neutron. The feasibility of n-gamma discrimination using the charge comparison method was verified. By using the Geant4 toolkit, the monitor was modeled with precise physical processes including neutron tracking, scintillation, and optical photon transmission. The gamma sensitivity and detection efficiency were investigated in the simulation. It was concluded that a 0.5-mm-thick lithium-glass scintillator with natural lithium is an appropriate choice to satisfy both the neutron detection efficiency and gamma elimination requirements.
电子版国际标准刊号2210-3147 ; 2210-3147
WOS关键词MONTE-CARLO ; MONTE-CARLO ; SCINTILLATOR ; DETECTORS ; GEM ; SCINTILLATOR ; DETECTORS ; GEM
WOS研究方向Nuclear Science & Technology ; Nuclear Science & Technology ; Physics ; Physics
语种英语 ; 英语
CSCD记录号CSCD:6313365 ; CSCD:6313365
WOS记录号WOS:000442399800006 ; WOS:000442399800006
源URL[http://ir.ihep.ac.cn/handle/311005/286231]  
专题高能物理研究所_东莞分部
高能物理研究所_实验物理中心
中国科学院高能物理研究所_中国散裂中子源
通讯作者Sun ZJ(孙志嘉)
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714		 Zhou K,Zhou JR,Zhou XJ,et al. Compact lithium-glass neutron beam monitor for SANS at CSNS, Compact lithium-glass neutron beam monitor for SANS at CSNS[J]. NUCLEAR SCIENCE AND TECHNIQUES, NUCLEAR SCIENCE AND TECHNIQUES,2018, 2018,29, 29(9):127, 127.
APA 周科.,周健荣.,周晓娟.,谢肇阳.,杨桂安.,...&Sun, ZJ.(2018).Compact lithium-glass neutron beam monitor for SANS at CSNS.NUCLEAR SCIENCE AND TECHNIQUES,29(9),127.
MLA 周科,et al."Compact lithium-glass neutron beam monitor for SANS at CSNS".NUCLEAR SCIENCE AND TECHNIQUES 29.9(2018):127.

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来源：高能物理研究所

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